<!DOCTYPE html>
<html>
<head>
	<meta http-equiv="Content-Type" content="text/html">
	<meta charset="utf-8" />
	<meta http-equiv="X-UA-Compatible" content="IE=edge" />
	<meta name="viewport" content="width=device-width,initial-scale=1,minimum-scale=1,maximum-scale=1,user-scalable=no" />
	<title></title>
</head>
<body erke-hide>
</body>
<script>
/**
 * @param {number[]} nums
 * @return {boolean}
 */
var containsDuplicate = function(nums) {
    nums=nums.sort(aAronDie);
	for(var i=0;i<nums.length-1;i++){
		if(nums[i]==nums[i+1]){
			console.log(true);
			return true;
		};
	};
	console.log(false);
	return false;
};
function aAronDie(a,b){
	return a-b;
};
var res=new containsDuplicate([1,2,3,4]);
</script>
</html>
